Novel molten salt heat exchanger
The U-shaped pipe with baffles in the salt heat exchanger addresses low thermal efficiency by increasing fluid turbulence and contact time, improving heat exchange performance.
Patent Information
- Application Number
- CN202422300104.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing molten salt heat exchangers have low thermal conversion efficiency and short thermal contact area, resulting in poor use.
A new type of molten salt heat exchanger is designed, adopting a U-shaped tube and a baffle structure to increase the contact time and area between the cold liquid and the molten salt hot fluid, and improve the heat transfer effect through the U-shaped tube set in the S-shaped shape.
By increasing the contact time and area between the cold liquid and the molten salt hot fluid, the heat transfer efficiency is improved and a more efficient heating effect is achieved.
Smart Images
Figure CN223106743U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a novel molten salt heat exchanger. Background Art
[0002] A molten salt heat exchanger is a heat exchange device that uses molten salt as a heating medium. It usually consists of special tubular electric heating elements combined with a flange cluster and a pressure vessel to form a heating unit, and uses heated nitrate to melt nitrate as the heating medium. This heating method forms an integral with a molten salt tank. By preheating the nitrate to make it liquid, and then pumping the molten salt into the heater through a molten salt pump, the molten salt is further heated. The heating purpose is basically achieved at the outlet of the molten salt heater.
[0003] There are still some defects in the existing molten salt heat exchangers. During the use of most molten salt heat exchangers, the time of the heat contact area is short, resulting in low heat conversion efficiency and reducing the use effect. Therefore, we propose a novel molten salt heat exchanger. Content of the Utility Model
[0004] The purpose of the utility model is to provide a novel molten salt heat exchanger to solve the problem of low heat conversion efficiency of the existing molten salt heat exchanger mentioned in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A novel molten salt heat exchanger, including a tank body, a support frame is arranged at the bottom of the tank body, a hot fluid inlet is arranged at the bottom of the tank body, a hot fluid outlet is arranged above the tank body, a tube sheet is arranged at one end of the tank body, a tube box is arranged on one side of the tube sheet, a cold liquid inlet is arranged above the tube box, a cold liquid outlet is arranged at the bottom of the tube box, a partition board is arranged inside the tube box, liquid inlet grooves and liquid outlet grooves are arranged on the upper and lower sides of the partition board, a U-shaped tube is arranged inside the tank body, baffle plates are arranged on the surface of the U-shaped tube, and liquid inlet holes and liquid outlet holes are arranged on one side of the tube sheet.
[0006] Preferably, both ends of the bottom of the tank body are fixedly connected with the support frame, one side of the bottom of the tank body is fixedly connected with the hot fluid inlet, and one end surface above the tank body is fixedly connected with the hot fluid outlet.
[0007] Preferably, the tank body and the tube box are hermetically connected through the tube sheet, and the cold liquid inlet is fixedly connected to the upper surface of the tube box.
[0008] Preferably, the cold liquid outlet is fixedly connected to the bottom surface of the tube box, and the partition board is fixedly connected to the middle part inside the tube box.
[0009] Preferably, the upper part of the partition board and the inside of the tube box form a liquid inlet groove, and the lower part of the partition board and the inside of the tube box form a liquid outlet groove.
[0010] Preferably, baffle plates are respectively and staggeredly connected to the upper and lower surfaces inside the tank body. The U-shaped pipe is fixedly penetrated through the surface of the baffle plate, and the two ends of the U-shaped pipe are respectively and hermetically connected to the liquid inlet hole and the liquid outlet hole.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] During the reflux of the cold liquid in the U-shaped pipe, the molten salt liquid inside the tank body will wrap the outer surface of the U-shaped pipe. When the cold liquid flows back from the liquid inlet hole through the U-shaped pipe to the liquid outlet hole, the flow direction of the molten salt hot liquid is changed by the provided baffle plates, the fluid flow rate and the degree of turbulence are increased, and the heat transfer effect is improved. The S-shaped U-shaped pipe increases the contact time and area between the cold liquid and the molten salt hot fluid inside the tank body. The heated liquid in the U-shaped pipe will flow out from the inside of the cold liquid outlet, realizing the effect of heating the cold liquid. Description of the Drawings
[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0014] Figure 2 is a schematic top view structure diagram of the present utility model;
[0015] Figure 3 is a schematic internal sectional structure diagram of the present utility model.
[0016] In the figure: 1, tank body; 2, support frame; 3, hot fluid inlet; 4, hot fluid outlet; 5, tube sheet; 6, tube box; 7, cold liquid inlet; 8, cold liquid outlet; 9, partition board; 10, liquid inlet groove; 11, liquid inlet hole; 12, U-shaped pipe; 13, baffle plate; 14, liquid outlet hole. Detailed Embodiment
[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] Please refer to Figures 1-3, the present utility model provides a technical solution: a novel molten salt heat exchanger, including a tank body 1, a support frame 2 is provided at the bottom of the tank body 1, a hot fluid inlet 3 is provided at the bottom of the tank body 1, a hot fluid outlet 4 is provided above the tank body 1, a tube sheet 5 is provided at one end of the tank body 1, a tube box 6 is provided on one side of the tube sheet 5, a cold liquid inlet 7 is provided above the tube box 6, a cold liquid outlet 8 is provided at the bottom of the tube box 6, a partition plate 9 is provided inside the tube box 6, liquid inlet grooves 10 and liquid outlet grooves 15 are provided on the upper and lower sides of the partition plate 9, a U-shaped tube 12 is provided inside the tank body 1, a baffle plate 13 is provided on the surface of the U-shaped tube 12, and liquid inlet holes 11 and liquid outlet holes 14 are provided on one side of the tube sheet 5.
[0019] Specifically, both ends of the bottom of the tank body 1 are fixedly connected to the support frame 2, one side of the bottom of the tank body 1 is fixedly connected to the hot fluid inlet 3, one end surface above the tank body 1 is fixedly connected to the hot fluid outlet 4, the tank body 1 and the tube box 6 are hermetically connected through the tube sheet 5, the upper surface of the tube box 6 is fixedly connected to the cold liquid inlet 7, the bottom surface of the tube box 6 is fixedly connected to the cold liquid outlet 8, the middle part inside the tube box 6 is fixedly connected to the partition plate 9, the upper part of the partition plate 9 and the inside of the tube box 6 form the liquid inlet groove 10, the lower part of the partition plate 9 and the inside of the tube box 6 form the liquid outlet groove 15, the baffle plates 13 are respectively and staggeredly connected to the upper and lower surface inside the tank body 1, the U-shaped tube 12 is fixedly penetrated through the surface of the baffle plate 13, and both ends of the U-shaped tube 12 are hermetically connected to the liquid inlet hole 11 and the liquid outlet hole 14 respectively.
[0020] In this embodiment, through the provided hot fluid inlet 3, it is convenient to transport the molten salt liquid into the tank body 1 and finally flow out from the hot fluid outlet 4. Through the provided cold liquid inlet 7, it is convenient to transport the liquid to be heated into the liquid inlet groove 10. The cold liquid will enter the inside of the U-shaped tube 12 from the liquid inlet hole 11. After the reflux of the U-shaped tube 12, the liquid will enter the liquid outlet groove 15 from the liquid inlet hole 11. During the reflux of the cold liquid in the U-shaped tube 12, the molten salt liquid inside the tank body 1 will wrap the outer surface of the U-shaped tube 12. When the cold liquid passes through the U-shaped tube 12 from the liquid inlet hole 11 and refluxes to the liquid outlet hole 14, the S-shaped U-shaped tube 12 increases the contact time and area between the cold liquid and the molten salt hot fluid inside the tank body 1. The liquid heated in the U-shaped tube 12 will flow out from the inside of the cold liquid outlet 8, achieving the effect of heating the cold liquid.
[0021] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A novel molten salt heat exchanger, comprising a tank body (1), characterized in that: The bottom of the tank body (1) is provided with a support frame (2), the bottom of the tank body (1) is provided with a hot fluid inlet (3), the upper part of the tank body (1) is provided with a hot fluid outlet (4), one end of the tank body (1) is provided with a tube sheet (5), one side of the tube sheet (5) is provided with a tube box (6), the upper part of the tube box (6) is provided with a cold liquid inlet (7), the bottom of the tube box (6) is provided with a cold liquid outlet (8), a partition plate (9) is arranged inside the tube box (6), liquid inlet grooves (10) and liquid outlet grooves (15) are arranged on the upper and lower sides of the partition plate (9), a U-shaped tube (12) is arranged inside the tank body (1), baffle plates (13) are arranged on the surface of the U-shaped tube (12), and liquid inlet holes (11) and liquid outlet holes (14) are arranged on one side of the tube sheet (5).
2. The novel molten salt heat exchanger according to claim 1, wherein: Both ends of the bottom of the tank body (1) are fixedly connected with a support frame (2), and one side of the bottom of the tank body (1) is fixedly connected with a hot fluid inlet (3). One end surface of the upper part of the tank body (1) is fixedly connected with a hot fluid outlet (4).
3. A novel molten salt heat exchanger according to claim 1, characterized in that: The tank body (1) and the tube box (6) are hermetically connected through a tube sheet (5), and the upper surface of the tube box (6) is fixedly connected with a cold liquid inlet (7).
4. A novel molten salt heat exchanger according to claim 1, characterized in that: The bottom surface of the tube box (6) is fixedly connected with a cold liquid outlet (8), and a partition plate (9) is fixedly connected to the middle part inside the tube box (6).
5. A novel molten salt heat exchanger according to claim 1, characterized in that: The upper part of the partition plate (9) and the inside of the tube box (6) form a liquid inlet groove (10), and the lower part of the partition plate (9) and the inside of the tube box (6) form a liquid outlet groove (15).
6. A novel molten salt heat exchanger according to claim 1, characterized in that: Baffle plates (13) are respectively and staggeredly connected to the upper and lower side surfaces inside the tank body (1). The U-shaped tube (12) is fixedly penetrated through the surface of the baffle plates (13), and both ends of the U-shaped tube (12) are hermetically connected with the liquid inlet holes (11) and the liquid outlet holes (14) respectively.